How many Grand Slam singles championships were won by the winner of the 1974 Virginia Slims of Newport?
18
-1
Section::::Abstract.
1974 Virginia Slims of Newport
54927790
-1
Section::::Abstract.
1974 Virginia Slims of Newport
54927790
-1
Section::::Abstract.
Chris Evert
222469
-1
Section::::Abstract.
Chris Evert
222469